4. GoGrow produces shovels and rakes. Sales and costs for the most recent year are indicated below:

Shovels Rakes Total

Units 8,000 20,000 28,000

Sales revenue $160,000 $40,000 $200,000

Variable costs 98,000 18,000 116,000

Fixed costs 28,000 12,000 40,000

Profit $34,000 $10,000 $44,000

The number of units and selling price per unit appears to be stable for the foreseeable future.

What is the weighted average contribution margin per unit?

Post full calculation